18254091072 has 112 divisors (see below), whose sum is σ = 55549109120. Its totient is φ = 5182175232.

The previous prime is 18254091067. The next prime is 18254091113. The reversal of 18254091072 is 27019045281.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 18254091072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167754 + ... + 254262.

Almost surely, 2^18254091072 is an apocalyptic number.

18254091072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18254091072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27774554560).

18254091072 is an abundant number, since it is smaller than the sum of its proper divisors (37295018048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18254091072 is a wasteful number, since it uses less digits than its factorization.

18254091072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86688 (or 86678 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 18254091072 in words is "eighteen billion, two hundred fifty-four million, ninety-one thousand, seventy-two".